140291286 has 8 divisors (see below), whose sum is σ = 280582584. Its totient is φ = 46763760.

The previous prime is 140291279. The next prime is 140291297. The reversal of 140291286 is 682192041.

140291286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

140291286 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11690935 + ... + 11690946.

It is an arithmetic number, because the mean of its divisors is an integer number (35072823).

Almost surely, 2^140291286 is an apocalyptic number.

140291286 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140291286 is a wasteful number, since it uses less digits than its factorization.

140291286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23381886.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 140291286 is about 11844.4622503514. The cubic root of 140291286 is about 519.6092799639.

The spelling of 140291286 in words is "one hundred forty million, two hundred ninety-one thousand, two hundred eighty-six".